Re: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath-selection-criteria-04.txt
Samita Chakrabarti <samita.chakrabarti@ericsson.com> Fri, 19 August 2011 19:20 UTC
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From: Samita Chakrabarti <samita.chakrabarti@ericsson.com>
To: "Rajiv Asati (rajiva)" <rajiva@cisco.com>, "Robert Raszuk (raszuk)" <raszuk@cisco.com>
Date: Fri, 19 Aug 2011 15:21:43 -0400
Thread-Topic: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath-selection-criteria-04.txt
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Cc: "idr@ietf.org" <idr@ietf.org>
Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath-selection-criteria-04.txt
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Hi Rajiv, >From the document perspective, I'd like to see this statement in the draft as an assumption or suggestion for this change. Thanks for the clarification Rajiv and Robert! -Samita -----Original Message----- From: Rajiv Asati (rajiva) [mailto:rajiva@cisco.com] Sent: Friday, August 19, 2011 12:11 PM To: Robert Raszuk (raszuk); Samita Chakrabarti Cc: idr@ietf.org Subject: RE: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath-selection-criteria-04.txt Samita, No additional latency expected. Thanks. Cheers, Rajiv > -----Original Message----- > From: Robert Raszuk (raszuk) > Sent: Wednesday, August 17, 2011 6:44 PM > To: Samita Chakrabarti > Cc: Rajiv Asati (rajiva); idr@ietf.org > Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath-selection-criteria- > 04.txt > > Hi Samita, > > Allow me to make an observation that today BGP already validates > reachability to next hops, before considering path with such next hop to > be valid and to be eligible for best path selection. > > In the light of the above Rajiv's proposal does not introduce any > additional delay nor does it cause any impact on "bgp convergence". > > The only place which changes for some applications of BGP is the place > where you validate such next hop liveness/reachabilty. And as this is > very implementation dependent I think we should not discuss those > aspects on this mailing list. > > Best regards, > R. > > > Hi Rajiv, > > > > This is a good work clarifying the path-availability check in BGP > > path selection. Is this document supposed to update RFC 4271 section > > 9.1.2 in general? I wonder, if you have any data or thoughts on > > whether the additonal check at the data-plane level will add any > > latency in BGP path selection process and thus have any effect on > > convergence? A short paragraph on the impact on timing might be > > useful for implementors as it seems running BFD or any other > > mechanism to keep an up-to-date information of path-availability at > > the data-plane will avoid any delay in the path selection process. > > > > -Samita
- [Idr] I-D Action: draft-ietf-idr-bgp-bestpath-sel… internet-drafts
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath… Samita Chakrabarti
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath… Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath… Rajiv Asati (rajiva)
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-bestpath… Samita Chakrabarti
- Re: [Idr] I-D Action:draft-ietf-idr-bgp-bestpath-… Rajiv Asati (rajiva)
- Re: [Idr] I-D Action:draft-ietf-idr-bgp-bestpath-… John Scudder
- Re: [Idr] I-DAction:draft-ietf-idr-bgp-bestpath-s… Rajiv Asati (rajiva)
- Re: [Idr] I-DAction:draft-ietf-idr-bgp-bestpath-s… John Scudder
- Re: [Idr] I-DAction:draft-ietf-idr-bgp-bestpath-s… Samita Chakrabarti
- Re: [Idr] I-DAction:draft-ietf-idr-bgp-bestpath-s… Jeffrey Haas
- Re: [Idr] I-DAction:draft-ietf-idr-bgp-bestpath-s… Rajiv Asati (rajiva)